I have based my work not on the theory of evolution, which posits that humans descended from apes, but on the Biblical story of Paradise Lost. First, a bit of ancient factology, and then a flight of fancy.
Let's introduce the first humans, Adam and Eve. God created Adam from clay and breathed life into him. A little later, Eve was created from Adam's rib, and they began to live in Paradise, which was called Eden. They were provided with everything they needed, were satisfied with everything, and were not worried about anything. They seemed perfect to themselves and to each other. All in all, they were happy.
In that Garden of Eden there were many trees, including two forbidden trees: «In the fertile land, the Lord God grew every beautiful tree with edible fruit, and also he grew the tree of life in the middle of the garden and the tree of the knowledge of good and evil». Gen 2:9.
God warned Adam that eating of the fruit from the Tree of the Knowledge of Good and Evil leads to death: «but don’t eat from the tree of the knowledge of good and evil, because on the day you eat from it, you will die». Gen. 2:17.
In the same garden dwelt the Serpent: «The snake was the most cunning of all the wild animals that the Lord God had made. He said to the woman,“Did God really say that you shouldn’t eat from any tree in the garden?”. The woman said to the snake, “We may eat the fruit of the garden’s trees but not the fruit of the tree in the middle of the garden. God said, “Don’t eat from it, and don’t touch it, or you will die”. The snake said to the woman, “You won’t die! God knows that on the day you eat from it, you will see clearly and you will be like God, knowing good and evil». Gen. 3:1–6.
A number of questions arise, such as why did God create such a tree? And where did the Serpent come from? Here we can think about the balance of dark and light, and free will to choose sides, but that's a topic for another study. Although… we are not going to seriously criticize the Creator, are we? He wanted it and he created it! Just to be…
Let's get back to what the Scripture says: «The woman saw that the tree was beautiful with delicious food and that the tree would provide wisdom, so she took some of its fruit and ate it, and also gave some to her husband, who was with her, and he ate it. Then they both saw clearly and knew that they were naked. So, they sewed fig leaves together and made garments for themselves.